L.A. Story 1991

From Amazon:
Steve Martin wrote this film as a meditation on both love and Los Angeles (and then-wife Victoria Tennant). He plays a L.A. TV weatherman who finds himself conflicted about what to do with his life, both professionally and personally. As he works his way through a couple of relationships (including a very funny one with a frisky Sarah Jessica Parker, who talks him into colonic therapy), he discovers a L.A. freeway sign that gives him romantic advice. It helps him realize what he knows intuitively: that the British woman he is attracted to (Tennant) is the one he should pursue. A big cast (and lots of cameos) have fun with this witty (if...

I love when Steve Martin decides to write a movie. A well read man, he likes to throw in references that most people don't pick up on unless they're also well-read. Oddly enough, this movie was released not long after Mel Gibson's version of HAMLET came out, so there were people who were able to pick up on the references...